9870549 has 16 divisors (see below), whose sum is σ = 14371392. Its totient is φ = 5989248.

The previous prime is 9870547. The next prime is 9870551. The reversal of 9870549 is 9450789.

9870549 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9870547) and next prime (9870551).

It is not a de Polignac number, because 9870549 - 2¹ = 9870547 is a prime.

It is a super-2 number, since 2×9870549² = 194855475122802, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

9870549 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 9870549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9870541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1114 + ... + 4580.

It is an arithmetic number, because the mean of its divisors is an integer number (898212).

Almost surely, 2^9870549 is an apocalyptic number.

It is an amenable number.

9870549 is a deficient number, since it is larger than the sum of its proper divisors (4500843).

9870549 is a wasteful number, since it uses less digits than its factorization.

9870549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3556.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 9870549 is about 3141.7429875787. The cubic root of 9870549 is about 214.5097827000.

The spelling of 9870549 in words is "nine million, eight hundred seventy thousand, five hundred forty-nine".